Expedia and Priceline dominate online hotel bookings globally, but are facing competition from the apartment-sharing startups such as Airbnb, as well as hotels offering direct bookings through their own websites.

Priceline said on Monday it continues to search for a new chief executive.

Former CEO Darren Huston resigned in April after an investigation found that his personal relationship with an employee violated the company’s code of conduct. Priceline named Jeffery Boyd interim CEO.